Perhaps you should try some spelling variations:
"municipal investment treaties series" » "municipal investments treaties series", "municipal government treaties series", "municipal governments treaties series", "municipal investment strategies series", "municipal investment activities series", "municipal investment incentives series", "municipal investment textiles series", "municipal investment theories series", "municipal investment forestiers series"
"industrial development agencies series" » "industrial development policies series", "industrial development agencies saras", "industrial development agencies overview"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("municipal investment treaties series") OR ("industrial development agencies series"))~.
• Removing quotes may allow a broader search: (( municipal investment treaties series ) or ( industrial development agencies series ))~.
• Adding a wildcard symbol may retrieve word variants: (("municipal investment treaties series") or ("industrial development agencies series"))*.